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Research on Ultrasound Diagnostic Criteria for Intracranial and Extracranial Arterial Serial Stenosis

NCT06947720 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 700

Last updated 2025-08-15

No results posted yet for this study

Summary

This study utilized different hemodynamic parameters of transcranial color-coded Doppler (TCCD) and transcranial Doppler (TCD) to conduct ultrasonic grading evaluation on middle cerebral artery (MCA) stenosis severity in patients with severe extracranial internal carotid artery stenosis, as well as intracranial V4 segment stenosis severity in patients with severe vertebral artery (VA) origin stenosis. The aim was to establish ultrasonic diagnostic criteria and provide reference basis for clinical treatment decision-making. Clarify the distribution of stroke risk factors, establish and evaluate stroke risk identification and prediction models. Patient cohort: Individuals undergoing carotid artery stenting or vertebral artery stenting, including those with either 1) severe extracranial internal carotid artery stenosis combined with ipsilateral MCA tandem stenosis, or 2) unilateral severe vertebral artery origin stenosis combined with intracranial V4 segment tandem stenosis. Collected data included demographic information, vascular ultrasound findings, and imaging examination results. All patients underwent a 1-year follow-up investigation documenting follow-up vascular ultrasound results, laboratory test results, imaging findings, clinical symptoms (ischemic stroke, transient ischemic attack, hemorrhagic stroke), and occurrence of endpoint events.

Conditions

Interventions

PROCEDURE

stenting

All individuals are anesthetized, with local or general anesthesia depending on the patient's level of cooperation. During the surgery, heparin must be injected intravenously to control the activated clotting time between 250-300 seconds. The surgery is performed via the femoral artery, and the choice of stent type and size, as well as any required equipment, are determined by the intervention personnel themselves.

Sponsors & Collaborators

  • Xuanwu Hospital, Beijing

    lead OTHER

Principal Investigators

  • Yingqi Xing · Vascular Ultrasound Diagnosis Department, Xuanwu Hospital

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-09-01
Primary Completion
2025-12-31
Completion
2027-06-30

Countries

  • China

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06947720 on ClinicalTrials.gov